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INA2143
INA143
INA143
INA2143
High-Speed, Precision, G = 10 or G = 0.1
DIFFERENCE AMPLIFIERS
FEATURES
q DESIGNED FOR LOW COST
q G = 10V/V or G = 0.1V/V
q SINGLE, DUAL VERSIONS
q LOW OFFSET VOLTAGE:
±250µV max, ±3µV/°C max
q LOW GAIN ERROR: 0.01%
q HIGH SLEW RATE: 5V/µs
q FAST SETTLING TIME: 9µs to 0.01%
q LOW QUIESCENT CURRENT: 950µA
q WIDE SUPPLY RANGE: ±2.25V to ±18V
q SO-8 and SO-14 PACKAGES
DESCRIPTION
The INA143 and INA2143 are high slew rate, gain of
10V/V or 0.1V/V difference amplifiers consisting of a
precision op amp with a precision resistor network. The
on-chip resistors are laser trimmed for accurate gain and
high common-mode rejection. Excellent TCR tracking
of the resistor maintains gain accuracy and common-
mode rejection over temperature. They operate over a
wide supply range, ±2.25V to ±18V (+4.5V to +36V
single supply), and input common-mode voltage range
extends beyond the positive and negative supply rails.
V+
7
–In 2
10k
100k
5 Sense
6 Output
APPLICATIONS
q DIFFERENTIAL INPUT AMPLIFIER
BUILDING BLOCK
q DIFF IN/DIFF OUT AMPLIFIER
q GAIN = –10 INVERTING AMPLIFIER
q GAIN = +10 NON-INVERTING AMPLIFIER
q GAIN = +11 NON-INVERTING AMPLIFIER
q SYNCHRONOUS DEMODULATOR
q CURRENT/DIFFERENTIAL LINE RECEIVER
q VOLTAGE-CONTROLLED CURRENT SOURCE
q BATTERY POWERED SYSTEMS
q LOW COST AUTOMOTIVE
The differential amplifier is the foundation of many
commonly used circuits. The low cost INA143 and
INA2143 provide this precision circuit function without
using an expensive precision network.
The single version, INA143, package is the SO-8 surface
mount. The dual version, INA2143, package is the SO-14
surface mount. Both are specified for operation over the
extended industrial temperature range, –40°C to +85°C.
Operation is from –55°C to +125°C.
V+
11
–In A 2
10k
100k
12 Sense A
+In A 3
10k
–In B 6
10k
A
100k
100k
13 Out A
14 Ref A
10 Sense B
+In 3
10k
100k
1 Ref
B 9 Out B
INA143
4
+In B 5
10k
100k
8 Ref B
V– INA2143
4
V–
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111
Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©1999 Burr-Brown Corporation
PDS-1531A
Printed in U.S.A. June, 1999

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SPECIFICATIONS: VS = ±15V
At TA = +25°C, VS = ±15V, G = 10, RL = 10kconnected to ground, and reference pin connected to ground, unless otherwise noted.
INA143U
INA2143U
INA143UA
INA2143UA
PARAMETER
OFFSET VOLTAGE(1)
Initial(1)
vs Temperature
vs Power Supply
vs Time
Channel Separation (dual)
INPUT IMPEDANCE(3)
Differential
Common-Mode
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
Positive
Negative
Common-Mode Rejection Ratio
OUTPUT VOLTAGE NOISE(3)
f = 0.1Hz to 10Hz
f = 10Hz
f = 100Hz
f = 1kHz
GAIN
Initial
Error
vs Temperature
Nonlinearity
OUTPUT
Voltage Output
Positive
Negative
Positive
Negative
Current Limit
Capacitive Load (stable operation)
FREQUENCY RESPONSE
Small-Signal Bandwidth
Slew Rate
Settling Time: 0.1%
0.01%
Overload Recovery Time
POWER SUPPLY
Rated Voltage
Operating Voltage Range
Dual Supplies
Single Supply
Quiescent Current (per amplifier)
TEMPERATURE RANGE
Specification
Operation
Storage
Thermal Resistance
SO-8 Surface Mount
SO-14 Surface Mount
θJA
CONDITIONS
RTI
VCM = 0V
VS = ±2.25V to ±18V
dc
MIN TYP
±100
±1
±5
0.2
140
20
55
RTI
VO = 0V
1.1[(V+)– 1.5] 1.1[(V+) –1]
VO = 0V
1.1[(V–) +1.5] 1.1[(V–) + 1]
VCM = –14.85V to 14.85V, RS = 0
86
96
RTI
1
45
30
27
VO = –14V to +13.5V
VO = –14V to +13.5V
Gain Error < 0.1%
RL = 10kto Ground
RL = 10kto Ground
RL = 100kto Ground
RL = 100kto Ground
Continuous-to-Common
10
±0.01
±1
±0.0001
(V+) –1.5
(V–) +1
(V+) –1.3
(V–) +0.8
(V+) –0.8
(V–) +0.3
–25, +32
1000
–3dB
VO = 10V Step, CL = 100pF
VO = 10V Step, CL = 100pF
50% Overdrive
0.15
5
6
9
6
IO = 0
±2.25
+4.5
–40
–55
–55
±15
±0.95
150
100
MAX
±250
±3
±20
±0.05
±10
±0.001
±18
+36
±1.2
+85
+125
+125
MIN TYP MAX
T ±500
See Typical Curve
T ±30
T
T
T
UNITS
µV
µV/°C
µV/V
µV/mo
dB
k
k
TT
TT
80 T
V
V
dB
T µVp-p
T nV/Hz
T nV/Hz
T nV/Hz
T V/V
T ±0.1
%
T T ppm/°C
T
±0.002
% of FS
TT
TT
T
T
T
T
V
V
V
V
mA
pF
T MHz
T V/µs
T µs
T µs
T µs
TV
T TV
T TV
T T mA
T T °C
T T °C
T T °C
T °C/W
T °C/W
T Specifications the same as INA143U, INA2143U.
NOTES: (1) Includes the effects of amplifier’s input bias and offset currents. (2) Internal resistors are ratio matched but have ±20% absolute value. (3) Includes
effects of amplifier’s input current noise and thermal noise contribution of resistor network.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
®
INA143, INA2143
2

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SPECIFICATIONS: VS = ±5V
At TA = +25°C, VS = ±5V, G = 10, RL = 10kconnected to ground, and reference pin connected to ground, unless otherwise noted.
INA143U
INA2143U
INA143UA
INA2143UA
PARAMETER
CONDITIONS
MIN TYP
OFFSET VOLTAGE(1)
Initial(1)
vs Temperature
RTI
VCM = 0V
±200
±1
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
Positive
Negative
Common-Mode Rejection Ratio
GAIN
Initial
Gain Error
Nonlinearity
OUTPUT
Voltage Output
Positive
Negative
Positive
Negative
POWER SUPPLY
Rated Voltage
Operating Voltage Range
Dual Supplies
Single Supply
Quiescent Current (per amplifier)
RTI
VO = 0V
1.1[(V+)– 1.5] 1.1[(V+) –1]
VO = 0V
1.1[(V–) +1.5] 1.1[(V–) +1]
VCM = –3.85V to +3.85V, RS = 0
86
96
VO = –4V to +3.5V
VO = –4V to +3.5V
10
±0.01
±0.0001
Gain Error < 0.1%
RL = 10kto Ground
RL = 10kto Ground
RL = 100kto Ground
RL = 100kto Ground
(V+) –1.5
(V–) +1
(V+)–1.3
(V–)+0.8
(V+)–0.8
(V–)+0.3
IO = 0
±2.25
+4.5
+5
±0.92
T Specifications the same as INA143U, INA2143U.
MAX
±500
±0.05
±0.001
±18
+36
±1.2
MIN
T
T
80
T
T
T
T
TYP
T
T
T
T
T
T
T
T
T
T
T
T
T
T
NOTES: (1) Includes the effects of amplifier’s input bias and offset currents.
MAX
±750
±0.1
±0.002
T
T
T
UNITS
µV
µV/°C
V
V
dB
V/V
%
% of FS
V
V
V
V
V
V
V
mA
ABSOLUTE MAXIMUM RATINGS(1)
Supply Voltage, V+ to V– .................................................................... 36V
Input Signal (G = 10), Voltage ..................................................... 1.1 • VS
Current ........................................................ 0.5mA
Input Signal (G = 0.1), Voltage ..................................................... 11 • VS
Current ....................................................... 0.5mA
Output Short-Circuit (to ground)(2) .......................................... Continuous
Operating Temperature .................................................. –55°C to +125°C
Storage Temperature ..................................................... –55°C to +125°C
Junction Temperature .................................................................... +150°C
Lead Temperature (soldering, 10s) ............................................... +300°C
NOTES: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may degrade
device reliability. (2) One channel per package.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with ap-
propriate precautions. Failure to observe proper handling and
installation procedures can cause damage.
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may
be more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
PACKAGE/ORDERING INFORMATION
PRODUCT
Single
INA143U
"
INA143UA
"
Dual
INA2143U
"
INA2143UA
"
PACKAGE
SO-8 Surface Mount
"
SO-8 Surface Mount
"
SO-14 Surface Mount
"
SO-14 Surface Mount
"
PACKAGE
DRAWING
NUMBER(1)
182
"
182
"
235
"
235
"
SPECIFIED
TEMPERATURE
RANGE
–40°C to +85°C
"
–40°C to +85°C
"
–40°C to +85°C
"
–40°C to +85°C
"
PACKAGE
MARKING
INA143U
"
INA143UA
"
INA2143U
"
INA2143UA
"
ORDERING
NUMBER(2)
INA143U
INA143U/2K5
INA143UA
INA143UA/2K5
INA2143U
INA2143U/2K5
INA2143UA
INA2143UA/2K5
TRANSPORT
MEDIA
Rails
Tape and Reel
Rails
Tape and Reel
Rails
Tape and Reel
Rails
Tape and Reel
NOTES: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. (2) Models with a slash (/) are
available only in Tape and Reel in the quantities indicated (e.g., /2K5 indicates 2500 devices per reel). Ordering 2500 pieces of “INA143UA/2K5” will get a single
2500-piece Tape and Reel. For detailed Tape and Reel mechanical information, refer to Appendix B of Burr-Brown IC Data Book.
®
3 INA143, INA2143

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PIN CONFIGURATIONS
Top View
Ref 1
–In 2
+In 3
V– 4
INA143
NC = No Connection
SO-8
8 NC
7 V+
6 Output
5 Sense
Top View
NC 1
–In A 2
+In A 3
V– 4
+In B 5
–In B 6
NC 7
INA2143
A
B
SO-14
14 Ref A
13 Out A
12 Sense A
11 V+
10 Sense B
9 Out B
8 Ref B
NC = No Connection
®
INA143, INA2143
4

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TYPICAL PERFORMANCE CURVES
At TA = +25°C, VS = ±15V, G = 10, RL = 10kconnected to ground, and reference pin connected to ground, unless otherwise noted.
GAIN vs FREQUENCY
5
0
–5
–10
–15
VS = ±15V or ±5V
–20
10k
100k
Frequency (Hz)
1M
COMMON-MODE REJECTION vs FREQUENCY
100
90
80
70
60
50
VS = ±15V or ±5V
40
100 1k
10k
Frequency (Hz)
100k
1M
POWER SUPPLY REJECTION vs FREQUENCY
120
100
–PSRR
80
60
+PSRR
40
20
1
10 100 1k 10k 100k
Frequency (Hz)
20
15
10
5
0
–5
–10
–15
–20
–15
INPUT COMMON-MODE VOLTAGE
vs OUTPUT VOLTAGE
VS = ±15V
VS = ±5V
–10 –5
0
5
Output Voltage (V)
10 15
MAXIMUM OUTPUT VOLTAGE vs FREQUENCY
32
VS = ±15V
28
24
20
16
12
VS = ±5V
8
4
0
10k
100k
Frequency (Hz)
1M
TOTAL HARMONIC DISTORTION+NOISE
vs FREQUENCY
0.1
500kHz Filter
0.01
0.001
20
100 1k
Frequency (Hz)
10k 20k
®
5 INA143, INA2143